This is a recording of the December 13, 2023 Live-on-Zoom Tmedia 1+1 Solution Technical Training given by Luc Morissette, Director, Customer Service, TelcoBridges.

1. TMedia 1+1 Solution
Confidential

2. Topics Covered in this Presentation
▪ High Availability (HA)
▪ Tmedia 1+1 solution for HA
▪ TMedia 1+1 Connections
▪ Installation and Configuration
▪ Status
▪ Monitoring

3. High Availability
▪ Continuous operation in case of failure
▪ Hardware: Use two physical units
▪ Dual Telecom units
▪ Dual Ethernet switch
▪ Dual power supplies
▪ Network: Diversity
▪ TDM lines with different physical path
▪ Ethernet routing through different paths
▪ Application: Use backup applications with checkpointing
▪ Quick restart without effect
▪ Fallback to secondary

4. High Availability
▪ Problem identification
▪ Monitoring
▪ Health check
▪ Identify source
▪ Action plan in case of issues
▪ Prepared in advance
▪ Spare units
Monitoring
System

5. High Availability
▪ Active/Active
▪ Signaling relay
▪ Signaling + Media (Double capacity)
▪ 1+1
▪ Any mode at full capacity
▪ All traffic on one unit
Active
Active
Active
Standby

6. TMedia 1+1 Solution for HA
Primary Secondary
Configuration Replication
High Availability
Communication
• Configuration replication
• Application Heartbeat
• Automatic Selection of Master
Heartbeat / Checkpointing
• Redundant control ports
• High availability communication
TMG TMG

7. TMedia 1+1 Solution for HA
• TDM ports redundancy
• Passive 1+1 patch panel
• Receive signal duplicated
TMG
TMG
OC3
STM-1
1+1
Patch
Panel
Tmedia
Tmedia
1+1
Network
PSTN /
TDM Network
Primary
Secondary
Fiber
OC3/STM-1
Fiber
OC3/STM-1
Note: Network Fiber not protected
Main
Main

8. TMedia 1+1 Solution for HA
• TDM ports redundancy
• Transmit signal selected
TMG
TMG
OC3
STM-1
1+1
Patch
Panel
Tmedia
Tmedia
1+1
Network
PSTN /
TDM Network
Primary
Secondary
Fiber
OC3/STM-1
Fiber
OC3/STM-1
Main
Main Laser
off
Laser
on

9. TMedia 1+1 Solution for HA
• TDM ports redundancy
• Transmit signal selected
• Media and TDM signaling re-established
TMG
TMG
OC3
STM-1
1+1
Patch
Panel
Tmedia
Tmedia
1+1
Network
PSTN /
TDM Network
Primary
Secondary
Fiber
OC3/STM-1
Fiber
OC3/STM-1
Main
Main
Laser
off
Laser
on

10. TMedia 1+1 Solution for HA
• Automatic Protection Switching (APS) mode
TMG
TMG
Tmedia
Tmedia
1+1
Network
PSTN /
TDM Network
Primary
Secondary
Fiber
OC3/STM-1
Main Fiber
OC3/STM-1
Main
Main
APS
APS
OC3
STM-1
1+1
Patch
Panel
APS Fiber
OC3/STM-1
Network Fiber
Protected

11. TMedia 1+1 Solution for HA
• VoIP ports
• Any IP Traffic: SIP, RTP, Sigtran, H.248, Management
• Redundant with bonding or independent
Note: Cannot use LAG on these ports
TMG
IP
network
voip0
voip1

12. TMedia 1+1 Solution for HA
• TMedia failure
• VoIP ports assigned to secondary unit
• Reverse ARP (RARP) done to force network switchover
• Media and IP signaling re-established
TMG
IP
network
voip0
voip1
TMG
voip1
voip0
No IP
TMG
IP
network
voip0
voip1
TMG
voip1
voip0
No IP
Reverse ARP

13. TMedia 1+1 Solution for HA
• VoIP ports
• Use two ethernet switches for better redundancy
Ethernet Switch 2
TMG
voip0
voip1
Ethernet Switch 1

14. H.248 mode – no loss of calls
TMG3200 OC3/STM1
TMG3200 OC3/STM1
1+1
Patch
Panel
Primary
Secondary
IP
network
PSTN /
TDM Network
Media Gateway
Controller (MGC)
Real-time
checkpointing
Media
H.248
Communication
Media

15. Other Failure Scenarios
▪ Application down
▪ Automatic restart
▪ Resynchronization
Primary
APP
APP
APP
APP
Secondary
APP
APP
APP
APP

16. Other Failure Scenarios
▪ Application not restarting
▪ Fallback to secondary
▪ Resynchronization
▪ See:
https://docs.telcobridges.com/Redun
dancy_%26_High_Availability
Primary
APP
APP
APP
APP
Secondary
APP
APP
APP
APP

17. TMG3200 1+1 Connections
TMG3200 OC3/STM1
TMG3200 OC3/STM1
OC3
STM-1
1+1
Patch
Panel
Fiber
OC3/STM-1
Management
Main
APS
APS
Tmedia
Main
Tmedia
1+1
Network
Primary
Secondary
Note: Also applies to TSG3200
eth1
eth0
IP
network
voip0
voip1
voip1
voip0
mgmt0
mgmt0
Fiber
OC3/STM-1
PSTN /
TDM Network
High Availability
Communication
Passive
• OC3 and STM-1

18. TMG3200 1+1 Connections
• OC3/STM-1 1+1 Patch Panels
To Secondary TMG
To Primary TMG
From Network

19. TMG3200 1+1 Connections
TMG3200 DS3
TMG3200 DS3
DS3
Management
Tmedia
Tmedia
1+1
Network
PSTN
Primary
Secondary
DS3
1+1
Patch
Panel
DS3
DS3
IP
network
voip0
voip1
voip1
voip0
eth1
eth0
• 3x DS3
mgmt0
mgmt0

20. 20
TMG3200 1+1 Connections
Confidential
To Secondary TMG
To Primary TMG
From Network
• DS3 1+1 Patch Panels

21. TE
1+1
Patch
Panel
TMG3200 1+1 Connections
IP
network
TMG3200 T1/E1
TMG3200 T1/E1
SCSI
voip0
Management
Tmedia
Tmedia
1+1
Network
PSTN /
TDM Network
Primary
Secondary
TE
1+1
Patch
Panel
SCSI T1/E1
eth1
eth0
mgmt0
mgmt0
voip1
voip1
voip0
32 T1/E1
port
32 T1/E1
port
• 64x T1/E1
• 32 ports per patch panel

22. TMG3200 1+1 Connections
Front
Rear
• T1/E1 1+1 Patch Panels
To Secondary TMG
To Primary TMG
From Network
Note: E1 at 120 ohms

23. 1+1
Patch
Panel
TSG800/TMG800 1+1 Connections
IP
network
TSG800 / TMG800
TSG800 / TMG800
T1/E1
voip0
Management
Tmedia
Tmedia
1+1
Network
PSTN /
TDM Network
Primary
Secondary
1+1
Patch
Panel
T1/E1
T1/E1
mgmt1
eth1
eth0
mgmt0
mgmt0 mgmt1
voip1
voip1
voip0
8 T1/E1
port
8 T1/E1
port
• 16x T1/E1
• 8 ports per patch panel

24. TSG800/TMG800 1+1 Connections
8 T1/E1 port
from Network
8 T1/E1 port to
Primary unit
8 T1/E1 port to
Secondary unit
▪ T1/E1 1+1 Patch Panel
▪ Passive
▪ Supports up to 8 T1 or E1
To Primary TMG
To Secondary TMG
From Network

25. TMedia Installation
▪ TMedia Installation
▪ Connect HA ports directly between the units (eth0/eth1)
▪ Connect TDM ports to 1+1 patch panel
▪ Connect VOIP ports (voip0/voip1)
▪ bonding → Must have vlans configured on both ethernet switches
▪ Initial configuration
▪ Select between primary and secondary

26. Initial Configuration 1+1 System
26
▪Connect from any web
browser
▪Select 1+1 redundant
System
▪Must have HA
communication

27. Initial Configuration 1+1 System
27
▪ Select Primary

28. Initial Configuration 1+1 System
28
▪ On new system select “no”
▪ For a primary unit
replacement, select “yes”

29. Initial Configuration 1+1 system
29
▪ Select Secondary
▪ Has 1+1 license
▪ Will synchronize configuration
from the primary

30. Configuration
▪ 1+1 group created automatically
▪ Connect to any unit to configure the 1+1 pair
▪ Licenses or upgrades must be done from the primary unit

31. Status
▪ State of the primary/secondary unit

32. Status
▪ History of events
See: https://docs.telcobridges.com/Toolpack:OnePlusOneGroupsStatus_B

33. Status
▪ State of the primary/secondary hosts
▪ Master/Slave state → Control of the 1+1 system

34. Monitoring
▪ Monitoring
▪ SNMP
▪ Restful API
▪ To monitor
▪ TDM interfaces
▪ VoIP interfaces
▪ Control interfaces
▪ Signaling interfaces
▪ Application failure/switchover

35. Monitoring
▪ SNMP
▪ ifTable: OID 1.3.6.1.2.1.2.2
▪ State of the interfaces changed (Ethernet, TDM, Signaling)
▪ Bonding (separate state than each interface)
▪ tbHostTable: OID 1.3.6.1.4.1.21776.1.9.2
▪ Unit Primary/Secondary and Master/Slave
▪ tbHaAppTable: OID 1.3.6.1.4.1.21776.1.6.1.2
▪ Applications running on primary or secondary unit

36. Test Reliability
▪ Test cases
▪ Disconnect cables (voip, HA, TDM, etc)
▪ One at a time!
▪ Shutdown unit
▪ Halt unit: Status -> Hosts -> Action: Shutdown/Halt
▪ Reboot host unit: Status -> Hosts -> Action: Reboot
▪ Reboot telecom unit: Status -> Hardware Units -> Reboot unit: Yes
See: https://docs.telcobridges.com/Toolpack:TelecomHardwareStatus_C

37. Action Plan
▪ Prepare scenarios in case of failures
▪ Physical port down → fix as soon as possible
▪ Ethernet (Voip or HA links)
→verify switch port status
→Verify physical cabling
▪ TDM
→ Verify link on both units
▪ Process to replace a unit in a 1+1 system
▪ See: https://docs.telcobridges.com/Using_a_spare_unit

38. THANK YOU!
www.telcobridges.com
support@telcobridges.com
+1.450.655.8993
38
Confidential